1) Number of hours required per unit is 2 hours and there are 8 working hours per day. There are 20 working days in each month. The number of workers needed to produce 1600 units in a month without overtime and without carrying inventory is:
2) Twenty-five samples of size thirty (30) were collected and a total of 48 nonconforming items were found yielding p-bar = 0.064. The three sigma upper control limit (UCL) for a p control chart would be